[lazanas]

Hello all

I am a vintage boombox collector and recently got interested in headphones. Not long ago at a flee I found this:
 

 

 

 

 
Can anyone give me some information about these? I have been searching in the net with no luck

 

 

[Jupiterknight]

The nnly info I can help you with is the name of the brand or company who once upon a time made these.  The IE stands for International Electronics CIS-400.

 

[Staal]

Vintage boombox collector? Well how about that.